Harrow-disk sharpener.



No. 664,097. Patented Dec. I8, |900.

T. L. REGESTER. HARRDW DISK SHABPENER.

(Applicatiog filed May 16, 1900.)

(No Model.)

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VUNITED rares THOMAS L. REGESTER, OF ROOK ISLAND, ILLINOIS, ASSIGNOR TO THE ROOK ISLAND IRON WORKS, OF SAME PLACE.

HARROW-DISK SHARPENER.

SPECIFICATION forming part of Letters Patent No. 664,097, dated December 18, 1900.

Application tiled May 16, 1900. Serial No.'16,898. (No model.)

T0 cir/ZZ whom, t may concern.-

Beit known that I, THOMAS L. REGESTER, a

vcitizen of the United States, residing at Rock Island, in the county of Rock Island and State of Illinois, have invented new and useful Improvements in Harrow-Disk Sharpeners, of which the following is a specification.

The invention relates to barrow-disk sharpeners.

The object of the invention is to provide simple, durable, and comparatively inexpensive means by which harrow-disks may be eX- peditiously sharpened without the necessity of removing them from the harrow, thus saving much time and labor.

iVith this object in View the invention consists in certain features of construction and combination of parts, which will be hereinafter fully set forth.

In the accompanying drawings, Figure 1 is a perspective view of a harro'w, showing its disks supported above the ground and illus- L1-ating the application of my invention. Fig.

2 is a perspective view of a tool-holder-sup-A porting frame. Fig. 3 is a similar View of the disk-operating lever, and Fig. 4 is a plan view of the tool-holder.

In the accompanying drawings the same reference characters indicate the same parts of the invention.

Referring to said drawings, I have illustrated this harrow as of a well-known type and have shown the disk-shaft supported by blocks, so as to raise the disks from engagement with the ground.

1 denotes the tool-holder-supporting frame, which consists of a bar or tube 2, to which are longitudinally adjustably connected arms 3 by clamps 4l. The inner ends of these arms are provided with sliding clamps 5, which are adapted to engage the spools or hubs 6 of the harrow-disks and be locked by the set-screw 7 and hold the baror tube 2 in proper position.

8 denotes the tool-holder, which consists of two levers 9 and 10, pivoted together at 11 and formed with handles 12 and jaws 13 and 14E. Journaled upon one jaw is an antifrictionroller 15, which is adapted to engage the concave face of the barrow-disks, and connected to the other jaw is a tool or Sharpener 16, which is adapted to be brought against the convex edge of the disk to sharpen the same. Secured to one of the jaws is a clamp 17, consisting of a sleeve and set-screw7 by means of which the tool-holder is adjustably secured to the bar or tube 2. By grasping the handles and 'exerting pressure thereon the jaws are brought together, forcing the roller 15 into engagement with the concave face of the disk and the Sharpener 16 into engagement with the convex face of the disk. The disks are now rotated and their edges sharpened by being brought into contact with the tool 16.

To rotate the disks, I provide a lever 18, having a clamp consisting of clamp-arms 19, formed with sleeves 20, which embrace the lower end of the lever and are held in-adj usted position thereto by set-screws 21. The clamp is not tightly secured to the hub or spool of the disk, so that the lever is permitted to have a vertically-rocking movement, aswell as a slight lateral rocking movement, for a purpose hereinafter to appear. Secured to the lever above the clamp is a grip 22, consisting of a disk-shaped head 23, provided with a curved slot 24:, the walls of which embrace the edge of the disk, and further provided with a sleeve 25, which is adjustably secured tothe lever by aset-screw 26.v

When it is desired to sharpen the disks of a harrow, the disks are held supported above the ground in the manner shown in Fig. 1, and the tool-holder frame is connected to the harrow, as shown. The lever is clamped around one of the spools or hubs of the disks t6 be sharpened, with ils grip in engagement with the edge of the disk. Pressure is applied to the handle of the tool-holder, Ywhich brings the tool into engagement with the disk. Now by pressing the lever downward the disk will be rotated, and as its edge is forced along between the jaws of the tool-holder it will be sharpened by the Sharpener 16. The operating-lever rocks slightly laterally to release the grip from frictional contact with the edge of the disk and is thus raised to its normal position, when the operation may be again repeated.

In Fig. 1, in order to avoid confusion, I have shown the operating-lever connected with one disk of the harrow while the toolholder is acting upon another disk. If the IOO disks are all connected together so as to r0- tate in unison, this illustration Will be operative; but if the disks rotate independently it Will be understood that the tool-holder and the operating-lever will be applied to the disk being operated.

From the foregoing description, taken in connection with the accompanying drawings, the construction, operation, and advantages of my improved barrow-disk Sharpeners Will be readily apparent without requiring an extended explanation.

It will be seen that the device is sim'ple of construction, that said construction permits of its manufacture at small cost, and that it is exceedingly Well adapted for the purpose for which it is designed.

Various changes in the form, proportion, and the minor details of construction may be resorted to Without departing from the principle or sacrificing any of the advantages of this invention.

Having thus fully described the invention, what I claim as new, and desire to secure by Letters Patent, is-

l. `In a barrow-disk Sharpener, the combination of a portable tool-holdersupporting frame comprising a tube or bar provided with means for securing it to the frame of a harrow, and a tool-holder longitudinally adjustably connected to said tube or bar.

v2. In a barrow-disk Sharpener, a portable tool-holder-supporting frame comprising a tube or bar, adapted to extend parallel with the shaft or axle of a barrow, arms projecting at right angles from the bar to detachably connect it With the harroW, and a tool-holder longitudinally adjustably connected to said tube or bar, substantially as set forth.

3. In a barrow-disk Sharpener, a portable tool-holder-supporting frame comprising a tube or bar adapted to extend parallel with the shaft or axle of a barrow, arms extendingat right angles from the bar and adjustable longitudinally thereof and provided with clamps to engage the harroW to hold said tube or rod supported thereon, and a tool-holder longitudinally adj ustably connected to said bar, substantiallyas set forth.

4. In a barrow-disk Sharpener, the combination with a tool-holder-supporting frame consisting of a tube or bar, armsr longitudinally adjustably connected to said tube or bar, clamps adjustably connected to said arms, of a tool-holder adjustably connected to said tube or bar, substantially as set forth.

5. In a barrow-disk Sharpener, the combi- .naton with a tool-holder-supporting frame and a tool-holder carried thereby, of va lever provided with a clamp by' means of Which it is adapted to be fulcruxned to the barrow, and a grip carried by said lever to engage and rotate the barrow-disk, substantially as set forth.

6. In a harroW-disk Sharpener, the combination with a tool-holder-supporting frame, and a tool-holder carried thereby, of a lever provided With a clamp by means of which it is adapted to be fulcrunied to the harroW, and a slotted grip carried by said lever to engage the edge of aharroW-disk and rotate said disk, substantially as set forth.

In testimony whereof 'I have hereunto set my hand in the presence of two subscribing Witnesses.

THOMAS L. REGESTER.

Witnesses:

WM. F. FREY, THos. J. REDDEY. 

